Gas pipeline pressure testing
Thread Content
For gas pipelines such as steam and natural gas, if strength tests are to be conducted, should liquid be used? And when providing support for the structure, is it necessary to fill the pipelines with water to increase their weight? Generally, is gas or liquid used for pressure testing of such pipelines?
Strength testing is carried out using liquids; when testing the strength of pipes on pipe supports, the weight of the pressure water must be taken into account. Gas for leakage testing.
Depending on the situation! Decided by the chief engineer of the relevant unit! It must meet the standards!
Liquid is generally used for pipeline pressure tests, and the load from supports and hangers must take into account the weight of the water filled in them.
During compression, both liquids and gases are compressed
Strength testing generally uses liquids; high-pressure gases are too dangerous
Liquids should be used preferentially, as pressure testing with gases is relatively dangerous; it’s based on the principle of air guns
Strength testing generally uses liquids, typically referring to hydrostatic testing
Strength tests are generally carried out by the construction party, usually using hydraulic methods； For leakage tests, the owner is generally responsible, while the contractor handles them, usually by conducting airtightness tests. The hydraulic test requires consideration of the bracket’s load-bearing capacity!
Liquid is the best choice for strength tests! If the test pressure is not greater than 0.60 MPa, air pressure can also be considered; however, it poses a higher level of risk, so a proper plan must be developed! !
Looking at the design drawings, it is generally not recommended to use gas when the pressure exceeds 0.4 MPa